dcsimg

Classification

provided by World Register of Marine Species
In phylogenetic analyses, P. multiseries clusters together with P. pungens as sister taxon; firmly within a larger cluster of Pseudo-nitzschia species (e.g. Lundholm et al 2002)

Reference

Lundholm, N.; Daugbjerg, N.; Moestrup, Ø. (2002). Phylogeny of the Bacillariaceae with emphasis on the genus Pseudo-nitzschia (Bacillariophyceae) based on partial LSU rDNA. European Journal of Phycology. 37(1): 115-134.

license
cc-by-4.0
copyright
WoRMS Editorial Board
contributor
Lundholm, Nina, N.

Distribution

provided by World Register of Marine Species
P. multiseries is globally distributed from subpolar to subtropical waters: In Atlantic waters of Europe, North and South America and in Pacific waters of Northeast Asia and North America i.e. from ca. 65°N-15°N and 30°S -50°S

References

  • Villac M.C., Roelke D.L., Chavez F.P., Cifuentes L.A. & Fryxell G.A. 1993. Pseudonitzschia australis and related species from the west coast of the U.S.A.: occurrence and domoic acid production. J. Shellfish Res. 12: 457-465.
  • Hasle, G. R. (2002). Are most of the domoic acid-producing species of the diatom genus Pseudo-nitzschia cosmopolites?. Harmful Algae. 1(2): 137-146.

license
cc-by-4.0
copyright
WoRMS Editorial Board
contributor
Moestrup, Øjvind [email]

Harmful effect

provided by World Register of Marine Species
P. multiseries produces domoic acid, and was the cause of the major harmful event in Canada 1987 caused by Amnesic Shellfish Poisoning (ASP), affecting more than 100 persons of which 3-4 died (Bates et al. 1989). Since this incident, toxin producing strains of P. multiseries has been reported from globally distributed strains e.g. France (Amzil et al. 2001), Japan (Kotaki et al. 1999) and Canada (Evans et al. 2004). Domoic acid has been found in amounts up to 21 pg/cell in cultured strains (e.g. Bates et al 1989, Douglas & Bates 1992)

References

  • Bates S.S., Bird C.J., de Freitas A.S.W., Foxall R., Gilgan M.W., Hanic L.A., Johnson G.E., McCulloch A.W., Odense P., Pocklington R.G., Quilliam M.A., Sim P.G., Smith J.C., Subba Rao D.V., Todd E.C.D., Walter J.A. & Wright J.L.C. 1989. Pennate diatom Nitzschia pungens as the primary source of domoic acid, a toxin in shellfish fram Eastern Prince Edward Island, Canada. Can. J. Fish. Aquat. Sci. 46: 1203-1215.
  • Douglas D.J. & Bates S.S. 1992. Production of domoic acid, a neurotoxic amino acid, by an axenic culture of the marine diatom Nitzschia pungens f. multiseries Hasle. Can. J. Fish. Aquat. Sci. 49: 85-90.
  • Evans KM, Bates SS, Medlin LK, Hayes PK. (2004). Microsatellite marker development and genetic variation in the toxic marine diatom Pseudo-nitzschia multiseries (Bacillariophyceae). J. Phycol. 40:911–920.
  • Amzil, Z.; Fresnel, J.; Gal, D. L.; Billard, C. (2001). Domoic acid accumulation in French shellfish in relation to toxic species of Pseudo-nitzschia multiseries and P. pseudodelicatissima. Toxicon. 39(8): 1245-1251.

license
cc-by-4.0
copyright
WoRMS Editorial Board
contributor
Lundholm, Nina, N.

Identification

provided by World Register of Marine Species
P. multiseries is morphologically similar to P. pungens, but can be differentiated by having 3-4 rows of poroids (P. pungens has 2), a poroid density of 5-7 (P. pungens has 2-5), and partly by a higher density of band striae. (Hasle 1995, Hasle et al. 1996). Distinguishing between the two species usually requires electron microscopy or molecular data.

Reference

Hasle, G. R. (1995). Pseudo-nitzschia pungens and P. multiseries (Bacillariophyceae): nomenclatural history, morphology and distribution. J. Phycol. 31: 428-435.

license
cc-by-4.0
copyright
WoRMS Editorial Board
contributor
Lundholm, Nina, N.

Morphology

provided by World Register of Marine Species
Cells lanceolate in valve view, lanceolate-linear in girdle view, sharply pointed ends Valve width 3.4-4.5µm Valve face with 10-15 striae and fibulae in 10 µm. No central nodule (and interspace) Each stria with 3-4 rows of poroids, each with 5-7 poroids in 1µm Striated bands, valvocopula with 19-30 striae in 10µm

References

  • Hasle, G. R. (1995). Pseudo-nitzschia pungens and P. multiseries (Bacillariophyceae): nomenclatural history, morphology and distribution. J. Phycol. 31: 428-435.
  • Hasle, G. R.; Lange, C. B.; Syvertsen, E. E. (1996). A review of Pseudo-nitzschia, with special reference to the Skagerrak, North Atlantic, and adjacent waters. Helgoländer Meeresuntersuchungen. 50(2): 131-175.

license
cc-by-4.0
copyright
WoRMS Editorial Board
contributor
Lundholm, Nina, N.